内部和外部调制解调器之间的区别

调制解调器：
调制解调器是一种硬件联网设备，其基本功能是将数据转换为信号。调制解调器对于拥有Internet访问很重要。调制解调器有两种类型：

1.内部调制解调器：
顾名思义，内置调制解调器是计算机内部的一部分。它通常随计算机一起提供，并且也已预先安装。关于内置调制解调器，最好的事情是它可以使用计算机的电源供电，并且不需要额外的电源即可工作。

2.外部调制解调器：
外部调制解调器与内部调制解调器一样安静，因为它还允许访问Internet。外部调制解调器是计算机的外部部件。当计算机无法在其内部安装内部调制解调器时，可以使用它。调制解调器通常通过串行或USB电缆连接到计算机，并且还需要外部电源才能运行。

内部和外部调制解调器之间的区别：

S.No.	Internal Modem	External Modem
1.	It has built-in UART.	It doesn’t have built-in UART. They use the computer’s serial port as UART.
2.	Its Price is low as compared to external modem.	It is comparatively high in price.
3.	For internal modem, user doesn’t need to buy any external accessories.	In an external modem, RS232 interface cable has to be brought.
4.	It is hard to transfer the internal modem to another computer.	The external modem can be moved easily.
5.	The internal modem is powered by PC.	The external modem needs external power supply.
6.	It is present inside the computer.	It is present outside the computer.
7.	It can insert into a vacant expansion slot.	It cannot come into the expansion slot.
8.	No holder case is required.	Holder case is required.
9.	It is incompatible with different kind of PCs.	It is compatible for all kind of PCs.
10.	The user is unable to see the status of the modem directly.	The user can check the status of the modem directly.